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Apparatus and method locating a mobile communication unit

  • US 20070076674A1
  • Filed: 09/30/2005
  • Published: 04/05/2007
  • Est. Priority Date: 09/30/2005
  • Status: Abandoned Application
First Claim
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1. A method ascertaining location of a mobile communication unit with respect to at least one fixed access point;

  • each respective location of each respective access point of said at least one fixed access point being known;

    the method comprising;

    (a) transmitting a first message from said mobile communication unit;

    (b) transmitting a second message from at least one responsive fixed access point of said at least one fixed access point;

    said second message being responsive to said first message;

    (c) measuring at selected stations among said mobile communication unit and said at least one fixed access point time intervals between noting said first message and noting said second message; and

    (d) employing said measured time intervals at said selected stations or calculating at least one line of position locating said mobile communication unit.

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